<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>小米</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }

    .box {
      width: 1200px;
      height: 460px;
      background-color: pink;
      margin: 50px auto;

    }

    .box .left {
      width: 230px;
      height: 460px;
      background-color: antiquewhite;
      float: left;
    }

    .box .right {
      width: 970px;
      height: 460px;
      background-color: bisque;
      float: left;
    }

  </style>
</head>
<body>
  <div class="box">
    <div class="left">左侧</div>
    <div class="right">右侧</div>
  </div>
</body>
</html>
